26.3.1. Implicit Jumps

Try these first

1. 1.

   What is an implicit jump?

   Hint

   Think about how jumps can happen in response to flags.

2. 2.

   Define a macro instruction.

   Hint

   Consider the relationship between macro and micro instructions.

3. 3.

   What is the main difference between implicit and explicit jumps?

   • Implicit jumps require explicit commands
   • Explicit jumps are defined in macro instructions
   • Implicit jumps are always slower

   Hint

   Consider a specific example for clarity.

4. 4.

   True or False: Implicit jumps cannot be optimized within a micro routine.

   • True
   • False

   Hint

   Reflect on how microprograms can handle various scenarios efficiently.

5. 5.

   Design a microprogram that utilizes both implicit and explicit jumps. Describe how each type of jump would interact during execution.

   Hint

   Sketch out the states and transitions to illustrate interactions.

6. 6.

   Critically analyze how the use of control signals impacts the performance of microprogrammed control units and suggest improvements.

   Hint

   Look for specific points in programming where efficiency lags.